Which si unit is the correctly abbreviated for describing the mass on an object.
a). m
b...
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Explain why the aperture of the spherical mirror should be small compared to the radius of curvature of the mirror.
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Aregion of space in which a measurable gravitational force is indicated by the force exerted on a test mass is called
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At 20∘c, the hole in an aluminum ring is 2.800 cm in diameter. you need to slip this ring over a steel shaft that has a room-temperature diameter of 2.804 cm . 1. to what common temperature should the ring and the shaft be heated so that the ring will just fit onto the shaft? coefficients of linear thermal expansion of steel and aluminum are 12×10−6 k−1 and23×10−6 k−1 respectively.
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